
Base 9 Geodetic Consulting Services
Calendar of Upcoming Events
Below are training events currently scheduled:
2026: Details and links will be updated as they are available on these events where
Dave is presenting!
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Jul 30 Florida Surveying and Mapping Society Miami, FL
- New Datums, New Coordinates, New Heights
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Aug 7 Prof. College of Engineers and Land Surveyors of Puerto Rico San Juan, PR
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Aug 8 Prof. College of Engineers and Land Surveyors of Puerto Rico Mayaguez, PR
Details TBA
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Sep 17 Rhode Island Society of Professional Land Surveyors Warwick, RI
Details TBA
What people are saying about Dave and Base 9 Geodetic Consulting Services workshops:
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"Dave is the Rosetta Stone of Geodesy."
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"Great speaker!! Very informed; please come back."
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"Always learn new things from David Doyle.""
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"A great speaker. Very knowledgeable and easy to listen to. Lots of good information."
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"Extremely informative. Dave is always an excellent presenter."
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"Would like to see this seminar each year to keep updated on NSRS."
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"You are the Neil deGrasse Tyson of Surveying"
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"Invaluable presenter with wealth of knowledge and the wisdom to make understanding content easier."
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"Instructor extremely informative and knowledgeable. Would recommend every surveyor take his class."
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"This course should be repeated in future conferences."
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"Good speaker and did not talk over our heads."
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"Very experienced, based on 'real world' experience."
You can contact these organizations, who have hosted Base 9 Geodetic Consulting Services seminars, for references/reviews:
Arkansas Society of Professional Surveyors - October 2025
Missouri Society of Professional Land Surveyors - October 2025
Virginia Association of Surveyors - April 2025
California Land Surveyors Association - March 2025
Nevada Association of Surveyors - March 2025
Maryland Surveyors Society - March 2025
Idaho Society of Professional Land Surveyors - February 2026
New Jersey Society of Professional Land Surveyors - February 2026
Montana Association of Registered Land Surveyors - March 2026
Land Surveyors Association of Washington - February 2026
Videos/recordings of Dave's seminars:
-- "Relationship of and transformations between most common reference frames used in the U.S."; January 30, 2015
-- "Modernization of the National Spatial Reference System "; March 14, 2014
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Previews of GeoLearn Webinars
-- Fundamentals of Geodesy, part 1 November 14, 2014, 4:24
-- NGS Datasheets Tips, January 12, 2015, 3:59
-- and many others!